Abdera Therapeutics Debuts With $142 Million in Financing to Engineer and Advance Best-in-Class Antibody-Based Radiopharmaceuticals for Cancer

Proprietary ROVEr™ platform enables design of next-generation radiopharmaceuticals with tunable pharmacokinetic (PK) properties to maximize therapeutic effect and mitigate systemic toxicities

Potential for alpha- or beta-emitting radiopharmaceuticals, for clinically validated and novel cancer targets with a wide range of antigen expression

Lead program targeting DLL3 for small cell lung cancer and other solid tumors advancing toward clinic

Investor syndicate includes Versant Ventures, venBio Partners, Amplitude Ventures, adMare BioInnovations, Viking Global Investors, Qiming Venture Partners USA, RTW Investments, AbCellera and Northview Ventures

MENLO PARK, CA and VANCOUVER, British Columbia, April 20, 2023 – Abdera Therapeutics Inc., a biopharmaceutical company leveraging its advanced antibody engineering ROVEr™ platform to design and develop tunable, precision radiopharmaceuticals for cancer, today announced it has raised $142 million in combined Series A and B financing. Versant Ventures and Amplitude Ventures led the Series A round, with participation from Northview Ventures as well as founding partners of Abdera, adMare BioInnovations and AbCellera. The Series B round was led by venBio Partners with participation from existing investors as well as new investors including Viking Global Investors, Qiming Venture Partners USA and RTW Investments.

“Radiopharmaceuticals hold the potential to transform the treatment of cancer, but the ability to finely tune radioisotope delivery to the tumor, while sparing healthy tissue, remains a major challenge for this class of drugs,” said Lori Lyons-Williams, president and chief executive officer. “Abdera’s ROVEr™ platform enables the design of antibody-based radiopharmaceuticals that are ideally suited to specific cancer targets with optimized PK properties to pair with a radioisotope of choice and maximize therapeutic impact. Our goal is to leverage the power and flexibility of our platform to pursue a variety of oncology targets, advance potential best-in-class new cancer medicines and build Abdera into a leading radiopharmaceutical company.”